13446 results about "Hot pressing" patented technology

The invention relates to the technical field of current collectors, in particular to a flame-retardant composite current collector and a preparation method thereof.The flame-retardant composite current collector is composed of a base film layer, metal film layers deposited on the two faces of the base film layer and flame-retardant layers formed by curing flame-retardant coatings and coated on the surfaces of the metal film layers; the preparation method comprises the following steps: S1, mixing the modified polypropylene resin, the reinforcing component, the antioxidant, the lubricant, the coupling agent and the compatilizer to obtain a mixture; s2, carrying out melt extrusion and tape casting on the mixture, and stretching through a two-way stretching process to form a base film layer; s3, metal film layers are deposited on the two faces of the base film layer, and hot press molding is conducted; s4, coating a flame-retardant coating, drying and curing to obtain the flame-retardant composite current collector, the prepared flame-retardant composite current collector has excellent flame retardance, excellent mechanical property and thermal aging resistance and high peel strength, the binding force of the metal film layer and the base film layer is firm, and the quality and safety of the composite current collector are effectively improved.

The invention provides a plastic cellular board hot-pressing defect identification method and system, and relates to the technical field of defect identification. The method comprises the following steps: monitoring the position of a plate and generating position information; applying instantaneous local thermal excitation to the surface of the plate to generate a thermal excitation area; optical image data and infrared thermal image data are collected; obtaining temperature difference data according to the infrared thermal image data; distortion correction and noise filtering are carried out on the optical image data to obtain corrected optical image data; registering the temperature difference data with the corrected optical image data to obtain registered multi-modal data; and the defect problem is judged by analyzing the registered multi-modal data. The method provided by the invention overcomes the problem that the defect optical and infrared thermal imaging characteristics are difficult to recognize along with time attenuation when the plate is in a rapid moving and continuous cooling environment, and realizes robustness recognition and accurate positioning of hot pressing defects below millimeter level.

The invention discloses a high-entropy alloy bonding phase SiC hard composite material and a preparation method thereof, the SiC hard alloy composite material is a double-phase composite material and comprises SiC and high-entropy alloy, and the high-entropy alloy is AlMnCuiFeTi and AlZnCuFeTi. The proportion of the raw materials is 5 wt.%-20 wt.%. And the size of the SiC particles is 200 [mu] m. During preparation, firstly, the high-entropy alloy is prepared through mechanical alloying; after uniform mixing, a graphite mold is filled with the mixture for prepressing, the prepressing pressure is 10-50 MPa, and prepressing is conducted for 10-30 s; and then hot pressed sintering is carried out, the sintering pressure is 20-50 MPa, the sintering temperature is 1400-2000 DEG C, heat preservation is carried out for 10-90 min, and the high-entropy alloy bonding phase SiC hard alloy composite material is prepared. The liquid phase generated in the high-entropy alloy sintering process is used for reducing the sintering temperature, the organization structure is improved, and the hardness and toughness of the tungsten carbide hard alloy are improved.

The invention relates to the technical field of hot-press forming devices, and discloses an efficient hot-press forming device and process for a cedar homogeneous plate, the efficient hot-press forming device comprises a rack, two hydraulic cylinders are mounted on the rack, the output ends of the two hydraulic cylinders are fixedly connected with a pressing plate, an upper die is fixedly mounted on the bottom surface of the pressing plate, and a lower die is mounted on the rack; the rolling assembly is used for rolling and flattening the plate; the positioning assembly is used for centering and positioning the plate; and the sealing assembly is used for sealing a gap between the upper die and the lower die during hot pressing. Through the arrangement of the calendaring assembly, the two pressing rollers roll the surface of the plate from the middle to the two sides before the upper die makes contact with the plate, so that the local protruding and bulging parts are flattened, when the upper die makes contact with the plate, the surface of the plate can keep certain flatness, and it is ensured that stress is uniform during hot pressing.

The invention relates to the field of composite materials, and discloses an unmanned aerial vehicle carbon fiber shell preparation method, which comprises: carbon fiber surface modification treatment: carrying out surface cleaning, activation, chemical plating and surface functional modification on carbon fibers; preparing a resin matrix: mixing epoxy resin with a flexible toughening agent, a nano filler and a curing agent, and carrying out vacuum defoaming; carbon fiber laying: laying the modified carbon fiber cloth according to a set angle and sequence; vacuum bag forming: performing vacuum sealing on the laid carbon fiber composite material; and hot-pressing and curing: curing the composite material in an autoclave under the process conditions of set temperature, pressure and time. Through collaborative design of interface modification, matrix enhancement and process optimization, the comprehensive performance of the composite material is improved, so that the requirements of the unmanned aerial vehicle shell for high strength, fatigue resistance and impact resistance are met.

The invention discloses a printed circuit board production parameter intelligent dynamic optimization method and system, and relates to the technical field of circuit board processing optimization, and the method comprises the steps: monitoring the real-time temperature data of a lamination part in real time; processing the real-time temperature data, and identifying a temperature unstable region in the production process; screening hot pressing roller process sections with stable temperature distribution to execute lamination operation; evaluating the risk level of the current lamination process; screening a low-risk temperature distribution mode based on the risk level to carry out lamination production, obtaining a quality deviation coefficient, and judging whether a preset process standard is met or not based on the quality deviation coefficient; and for products which do not meet the preset process standard, temperature control parameters in the production process of the products are traced, and the temperature set value of the hot pressing roller is dynamically adjusted. The method has the advantages that the real-time quantitative evaluation of the wear state of the hot pressing roller is realized, and the line width precision control capability and the interlayer alignment consistency are remarkably improved.

The invention relates to the technical field of composite film preparation, in particular to a multi-layer co-extrusion nano ceramic coating high-barrier medicine packaging composite film and a preparation method thereof.The multi-layer co-extrusion nano ceramic coating high-barrier medicine packaging composite film comprises a base material layer, a gas barrier layer, a bonding transition layer and a nano ceramic functional coating; the base material layer comprises the following components in parts by mass: 80-100 parts of biaxially oriented polypropylene; 20 to 30 parts of metallocene linear low density polyethylene; 5 to 8 parts of nano titanium dioxide; 0.5 to 1 part of beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid; and 0.3 to 0.6 part of calcium stearate. Through the multi-layer co-extrusion and gradient curing technology and the five-layer co-extrusion technology, it is ensured that the thickness of a base film is uniform and interlayer bonding is firm, the adhesive force of the coating is enhanced through plasma surface treatment, and activity retention and uniform distribution of functional components are guaranteed through the segmented curing strategy of the nano ceramic coating; compared with a traditional hot-pressing compounding or solvent coating process of the composite film, the energy consumption and the solvent residue risk are greatly reduced, meanwhile, the production efficiency and the product consistency are improved, and large-scale application is provided for medicine packaging.

The present invention relates to a contour accuracy compensation method and system for a precision hot-press forming mold. The method comprises: delineating grids on a three-dimensional model of a hot-press forming mold to obtain mold surface grid data; performing curvature analysis to obtain a high-curvature region and a low-curvature region; performing high-density sampling on the high-curvature region, and performing low-density sampling on the low-curvature region, so as to obtain a sampling point set; using a coordinate measuring machine to perform three-dimensional coordinate measurement on the sampling point set to obtain surface contour data; performing comparative analysis on the surface contour data and a theoretical model to obtain a contour error distribution; on the basis of the contour error distribution, using an inverse distance weighted interpolation algorithm to perform interpolation operation on an entire mold surface to obtain a mold surface compensation amount distribution; and on the basis of the mold surface compensation amount distribution, correcting the three-dimensional model of the hot-press forming mold to generate a compensated mold processing model. The implementation of the present invention realizes intelligent and automated contour accuracy compensation.

The invention relates to the technical field of power batteries, and discloses a plastic uptake support CCS integrated busbar assembly, which comprises a plastic uptake support body, busbar bodies, a wiring harness assembly and a collection nickel sheet, the plastic uptake support body is provided with a plurality of positioning grooves and riveting columns, the positioning grooves are fixedly connected in series with the plurality of busbar bodies through the riveting columns, and the collection nickel sheet is connected with the wiring harness assembly. The busbar bodies comprise a series busbar, a bridging busbar, a positive leading-out electrode busbar and a negative leading-out electrode busbar, the blister support body is provided with a wire harness buckle, the wire harness buckle is located between the two groups of busbar bodies, a wire is fixed on the wire harness buckle, the acquisition nickel sheet is welded on the busbar bodies through laser, and the acquisition nickel sheet is upwarped in a non-breaking manner after being welded. According to the plastic uptake support CCS integrated busbar assembly, the wiring harness buckle can simply, conveniently and quickly fix the wiring harness and prevent the wiring harness from being separated from the plastic uptake support, a traditional mode of fixing the wiring harness through hot pressing or hot riveting is replaced, and the product cost is greatly reduced.

The present invention discloses an intelligent high-rise multi-board automatic hot press, which is characterized in that: it includes a frame, on which there are successively arranged an inlet board storage device, a rotary push board robot, a hot pressing device, an outlet board storage device and a control system from the inlet board end to the outlet board end. The hot pressing device includes at least one hot press platen base plate, a lifting hot pressing device, a lower workbench, at least three unit hot press plates with different lengths and equal widths, and a heating device. The rotary push board robot is controlled by the control system. The upper end surface of the hot press platen base plate is a stepped support surface. The unit hot press plates are successively stacked upward at intervals and are separably seated on different surfaces of the stepped support surface of the hot press platen base plate, so as to form a hot press space between adjacent unit hot press plates. The present invention has the advantages of high automation degree, no need for manual handling, high processing quality, high working efficiency, fast inlet and outlet board speeds, high hot pressing working efficiency, fast output speed, etc.

The invention discloses a preparation method of a degradable transparent conductive polymer film, and belongs to the technical field of film preparation. Preparing dispersion liquid I through graphene oxide quantum dots; preparing a dispersion liquid II from polyaniline nanofibers; dissolving pyrrole and toluenesulfonic acid in N, N-dimethylformamide to prepare a reaction solution, adding the dispersion liquid I and the dispersion liquid II, stirring, and adding ferric chloride hexahydrate to obtain a reaction solution; adjusting the pH value of the reaction solution to 1.5, and heating to obtain a polypyrrole solution; preparing cellulose acetate, polyvinyl alcohol and N, N-dimethylformamide to obtain a cellulose acetate solution; mixing the polypyrrole solution and the cellulose acetate solution, adding glutaraldehyde to obtain a mixed solution, and pouring the mixed solution into a mold to prepare a composite wet film; and putting the composite wet film into a hot-pressing forming machine for hot-pressing to generate the polymer film. The conductive polymer film prepared by the invention can be applied to the fields of supercapacitor electrode materials, electromagnetic shielding materials, flexible sensors and the like, and provides a new high-performance material choice for the development of related fields.

The invention provides a PHA dispersion emulsion as well as a preparation method and application thereof, and belongs to the field of high polymer materials. The invention aims to solve the technical problem that the prior art cannot simultaneously meet the requirements of the polyhydroxyalkanoate water dispersion system on extremely low temperature natural film-forming property, excellent comprehensive performance after film formation and long-term storage stability. The method is characterized in that a polyhydroxyalkanoate polymer with specific molecular weight and polydispersity index range, a coalescing agent 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate with a specific chemical structure and a specific type of aliphatic polyisocyanate cross-linking agent compatible with water dispersion are strictly limited and combined. Through the synergistic effect generated by the unique ternary combination, the minimum film forming temperature of the prepared emulsion can be reduced to 6-10 DEG C, a film can be naturally formed without hot pressing, and the formed film has excellent mechanical property, water resistance and adhesive force and has excellent storage stability of at least one year.

The invention discloses a copper-clad plate for a printed circuit board and a preparation method of the copper-clad plate, and relates to the technical field of printed circuit board materials. The invention discloses a preparation method of a copper-clad plate for a printed circuit board, which comprises the following steps of: soaking a reinforcing material in a glue solution, and drying to obtain a prepreg; carrying out hot-pressing treatment on the prepreg and copper foil to obtain a copper-clad plate; the glue solution comprises the following raw materials in parts by weight: 15-20 parts of vinyl-terminated polyphenyl ether, 20-25 parts of epoxy resin, 20-25 parts of difunctional silicon dioxide, 15-25 parts of an organic solvent, 0.3-0.6 part of a curing agent and 0.05-0.1 part of a curing accelerator; the difunctional silicon dioxide cross-linked polyphenyl ether and epoxy resin prepared by the preparation method disclosed by the invention are used as a resin material of a glue solution, and have the characteristics of good heat resistance and excellent mechanical properties.

The invention discloses a low-creep polytetrafluoroethylene composite material and a preparation method thereof, the low-creep polytetrafluoroethylene composite material comprises the following raw materials by weight: 50-60 parts of polytetrafluoroethylene, 35-45 parts of perfluoroalkoxy resin, 15-25 parts of modified composite fiber, and 1-2 parts of a lubricant. Polytetrafluoroethylene and perfluoroalkoxy resin are blended according to a specific proportion to serve as a base material, a hot press molding process is matched, the core performance of the material is guaranteed, the molten perfluoroalkoxy resin can fully infiltrate and wrap the surface of the modified composite fiber under the driving of hot press pressure, and the performance of the composite fiber is improved. The composite material has the advantages that the composite material is high in mechanical strength, can form strong interface combination with PTFE (polytetrafluoroethylene) framework particles, can permeate and fill gaps of the PTFE framework particles, eliminates internal pores through a welding effect, and finally forms a highly-compact whole, so that the creep resistance of the composite material is remarkably improved.

The invention relates to a composite solid electrolyte membrane with high ceramic content and a preparation method and application thereof. The preparation method comprises the following steps: mixing ceramic solid electrolyte particles activated by a silane coupling agent with an in-situ polymerization solution containing a cross-linking agent, an organic monomer, a plasticizer, a lithium salt, an ultraviolet light initiator and a thermal initiator to form solid electrolyte slurry, wherein the ceramic solid electrolyte particles account for 60-90% of the total mass of the composite solid electrolyte membrane; the preparation method comprises the following steps: coating a positive pole piece with solid electrolyte slurry, initiating shallow organic matter monomers and a cross-linking agent to generate in-situ polymerization through an ultraviolet light initiator, covering a negative pole piece for hot pressing treatment, initiating residual organic matter monomers and the cross-linking agent to generate in-situ polymerization through a thermal initiator, and forming a composite electrolyte membrane with high ceramic content. The invention also discloses an all-solid-state battery containing the composite solid electrolyte membrane. The solid-state battery containing the in-situ formed composite solid-state electrolyte membrane has relatively high cycling stability.

The invention belongs to the technical field of biological material engineering, and particularly relates to a fungal imitation leather material and a preparation method thereof. The method comprises the following steps: firstly, adopting wild fomes fomentarius subjected to 60Co irradiation mutagenesis as a production strain of a mycelium pad, and screening and optimizing components and content of a liquid culture medium to obtain a surface culture liquid culture medium suitable for the wild fomes fomentarius; secondly, by utilizing the strain and an optimized culture medium, the low-cost and large-scale production of the mycelium pad can be realized under the optimal culture condition; and the mycelium pad is subjected to various physical and chemical treatments such as plasticizing, cross-linking, hot-pressing compaction and the like, so that the mechanical strength of the mycelium pad is further improved, and the mechanical property requirements of leather products are met.

The invention discloses a method for improving folds of a lithium battery roll core, which comprises the following steps of: setting tension linear attenuation of a winding machine, and winding a negative plate, a diaphragm and a positive plate on the machine to obtain the roll core; after being discharged from the winding needle, the winding core is conveyed to a cold pressing position to be pre-pressed; after code scanning, the roll core enters a hot pressing process; and performing assembly, formation and capacity grading on the hot-pressed roll core. According to the method for improving the folding marks of the lithium battery roll core, by optimizing the winding tension, it is guaranteed that the pole piece and the diaphragm are flat in the winding and hot-pressing processes; according to the invention, a specific pre-hot-pressing mode is selected for diaphragms with different sizes, so that the pole piece is attached to the diaphragms, the pole piece is prevented from collapsing in a roll core shelving process, on the other hand, the paths of the pole piece and the diaphragms are the same when the pole piece and the diaphragms are attached and hot-pressed, and creases of the pole piece are reduced. By optimizing the procedures of winding, preheating, hot pressing and the like, the problem of creases on the outer ring of the large-size roll core is solved, and the problem of wrinkles on the inner ring after full charge is also solved.

The invention discloses a supercharged hot press temperature correction method and system, and relates to the technical field of data encryption, and the method comprises the steps: collecting temperature data and pressure data of the surface of a hot pressboard in a hot press through a high-precision sensor, carrying out the preprocessing, and carrying out the correction of the temperature of the hot pressboard based on the preprocessed temperature and pressure data; the method comprises the following steps: establishing a coupling relation model between temperature and pressure, determining an area needing to be corrected, performing local heating or local cooling adjustment on the area needing to be corrected, monitoring the influence of pressure change on temperature in real time in the area correction process, and dynamically adjusting the heating power. A complete and efficient supercharged hot press temperature correction method is formed through high-precision data acquisition, temperature-pressure coupling modeling, accurate correction area recognition and dynamic power adjustment, all the steps supplement one another, accurate control over hot press plate temperature distribution is jointly achieved, the temperature control precision, the response speed and the energy efficiency are remarkably improved, and the method is suitable for large-scale popularization and application. And a reliable technical guarantee is provided for improving the processing quality of the hot press.

The invention discloses a PBAT (poly (butylene adipate-co-terephthalate)) composite material containing nano encapsulation enzyme as well as a preparation method and application thereof. The PBAT composite material is prepared from the following components in percentage by mass: 50 to 90 parts of PBAT resin, 0 to 40 parts of filler and 0.01 to 20 parts of nano encapsulation enzyme. The preparation method comprises the following steps: firstly synthesizing the nano encapsulation enzyme, and then mixing the nano encapsulation enzyme, the PBAT resin and the filler, extruding, and carrying out hot press molding or curtain coating and film blowing. The method is characterized in that 1) the nano encapsulated enzyme has more excellent thermal stability than other immobilized enzymes, and the biological activity of the enzyme can be effectively maintained after high-temperature heat treatment; and 2) as the biological activity of the enzyme is effectively reserved, the PBAT composite material containing the nano encapsulated enzyme has higher environmental degradation speed than pure PBAT or a PBAT composite material containing free enzyme, and the environmental degradation speed can be reflected in various conditions such as aqueous solution and industrial compost.

The preparation method comprises the following steps: S1, mixing a hydrochloric acid solution with organic sodium sulfonate, then adding aniline and water, stirring and dissolving, then adding an oxidizing agent to carry out doping reaction, and carrying out suction filtration, washing, drying and grinding on a reaction product to obtain sodium-modified polyaniline; s2, uniformly mixing a negative electrode active material, a conductive agent and polytetrafluoroethylene, and then adding sodium polyaniline and an organic sodium supplement agent in a nitrogen or inert atmosphere for fibration treatment to obtain fibration powder; and S3, performing hot pressing on the fiberized powder onto the current collector to obtain the lithium ion battery. The prepared pre-sodium-modified negative electrode dry-method electrode has relatively good peeling strength and pole piece flexibility, and the condition that a traditional wet-method thick electrode is easy to crack is relieved; meanwhile, the dry-method electrode subjected to sodium modification treatment can induce uniform deposition of sodium ions, so that the dynamic performance of the whole sodium battery is improved, the problem of cyclic sodium precipitation is avoided, and the service life of the battery is further prolonged.

Disclosed in the present invention is an apparatus for measuring the thickness of heat insulation cotton after hot pressing. The apparatus comprises an inspection platform, and a conveyor belt used for conveying heat insulation cotton, wherein the conveyor belt closely passes over the top plane of the inspection platform. The apparatus further comprises: a thickness measurement assembly, which is used for measuring the thickness of the heat insulation cotton when the conveyor belt stops; and a surface inspection assembly, which comprises a laser scanning portion and an image collection portion, wherein the laser scanning portion obliquely emits a laser line to the surface of the heat insulation cotton and moves along the surface of the heat insulation cotton, and the image collection portion is located right above the heat insulation cotton and performs image collection on the trajectory of the laser line. The present invention can measure the thickness of heat insulation cotton by means of a thickness measurement assembly, and can further perform image collection on the trajectory of a laser line by means of an image collection portion, and therefore the surface quality of the heat insulation cotton can be inspected on the basis of a change in the laser line in an image, and then in combination with the measurement of the thickness of the heat insulation cotton, the range of heat insulation cotton inspection can be wider, and inspection results are also more objective.

The invention relates to the technical field of display panel manufacturing, in particular to a liquid crystal module hot-pressing binding method based on intelligent temperature control, which comprises the following steps: step 1, hot-pressing area partitioning and dynamic temperature calibration: dividing a contact surface of a hot-pressing head into a plurality of independently controlled temperature areas, each area is provided with at least one temperature sensor, and the temperature sensors in all the areas are calibrated through thermal imaging equipment, so that the deviation between the sensors and the real temperature is eliminated; 2, dynamic temperature compensation and pressure cooperative control are carried out; step 3, iteratively optimizing hot pressing process parameters, and training the deep learning model based on historical binding data to predict an optimal temperature-pressure parameter combination of a next binding period; and automatically correcting the initial temperature threshold in the step 1 and the target pressure in the step 2 according to a prediction result. Through the intelligent temperature control and pressure cooperative control technology, the temperature and pressure in the hot pressing process of the liquid crystal module are accurately adjusted, and the bonding quality and the production efficiency are remarkably improved.

The invention relates to a preparation method of high-strength and high-toughness composite silicon carbide ceramic, which comprises the following steps: mixing 70-82 parts of micron-sized alpha-silicon carbide powder, 5-15 parts of a mixed reinforced phase, 5-10 parts of a sintering aid, 1.9-2.1 parts of a dispersant and 0.9-1.1 parts of a binder to obtain a powder raw material, adding deionized water into the powder raw material, and carrying out ball milling to obtain water-based slurry; carrying out spray granulation on the water-based slurry to prepare spherical granulation powder; and adding the spherical granulation powder into a graphite mold, putting the graphite mold into a hot-pressing sintering furnace, heating to a sintering temperature, and carrying out hot-pressing sintering to obtain the high-strength and high-toughness composite silicon carbide ceramic. By adopting the method disclosed by the invention, the high-performance silicon carbide ceramic material with higher mechanical property and higher toughness can be obtained.

The invention discloses a preparation method of a slow-release wear-resistant fragrance-releasing ecological board, which belongs to the field of wood processing and manufacturing, and comprises the following steps: coating urea-formaldehyde resin adhesive on both sides of a base material; eucalyptus veneers are attached to the two faces of the sizing base material respectively, and cold pressing and hot pressing are conducted in sequence; one side of the technical veneer is coated with urea-formaldehyde resin glue, then fragrance-releasing type impregnated bond paper covers the urea-formaldehyde resin glue, and hot-pressing shaping is carried out; and taking two pieces of technical wood veneers subjected to hot-pressing shaping, coating the other surfaces of the technical wood veneers with urea-formaldehyde resin glue, attaching the technical wood veneers to the other surfaces of the eucalyptus veneers, and performing hot-pressing to obtain the slow-release wear-resistant fragrance-releasing ecological board. The method provided by the invention can effectively delay the fragrance release time of the fragrance release type ecological board and can reduce the physical and mechanical properties of the board due to the addition of the microcapsules.

The invention provides a carbon nanotube / polyvinyl alcohol hydrogel and a preparation method and application thereof, and belongs to the technical field of composite materials and flexible electron cross materials. Cellulose nanofibers and multi-walled carbon nanotubes are dispersed in deionized water to obtain dispersion liquid; uniformly mixing a polyvinyl alcohol solution and the dispersion liquid to obtain a mixed solution; carrying out oriented freezing forming on the mixed solution, and then freeze-drying the mixed solution to obtain an aerogel sample; performing hot pressing on the aerogel sample to obtain a thin film material; and swelling and balancing the film material in deionized water to obtain the carbon nanotube / polyvinyl alcohol hydrogel. According to the invention, collaborative optimization of conductive network continuity, interface bonding strength and energy dissipation capability is realized, so that high conductivity, high stress and obdurability are considered, and the material is endowed with multi-dimensional strain sensing capability and signal stability; and a new idea is provided for realizing effective balance between high conductivity and excellent mechanical properties of the hydrogel material.

The invention relates to the technical field of positioning machining, and discloses a plastic uptake carrier tape positioning hole blanking and film covering synchronous machining method and system.The method comprises the steps that specification identification is conducted on a plastic uptake carrier tape entering machining equipment, and carrier tape specification parameters are obtained; calculating a transverse adjusting distance based on the carrier tape specification parameters and driving a blanking die to be pre-adjusted to a target position; after the blanking die is pre-adjusted, the blister carrier tape is fed into a blanking station to execute positioning hole blanking, the blanked carrier tape is obtained, and the actual size of the carrier tape is measured; the film covering width of a film covering station is adjusted according to the actual size of the carrier tape, film covering operation is carried out on the blanked carrier tape, and the carrier tape after film covering is obtained; and the carrier tape subjected to film covering is fed into a hot pressing station, the partition pressure distribution value is calculated according to the film covering width, hot pressing operation is executed, and the finished carrier tape is obtained.The linkage control over the stations is achieved, and the production line coordination and the product quality consistency are remarkably improved.

The invention relates to the technical field of sealing ring hot-press forming, discloses sealing ring hot-press forming equipment, and aims to solve the problems of low finished product taking-out and mold cleaning efficiency and low automation degree in the prior art. The equipment comprises a hot press base, a hot press base and a lower die which are arranged on the hot press base, and a hot press plate and an upper die which are arranged above the hot press base in a lifting manner. The pushing part and the scraping part which work in a linkage mode are arranged, and the pushing part comprises a lifting supporting and pushing piece driven by an electric rod and a top ring and is used for upwards ejecting out a sealing ring formed in a lower mold; the scraping part comprises a rotation guiding part for enabling the supporting and pushing part to rotate during ascending and descending and a silica gel scraper which is elastically connected to the top ring and can be unfolded in the ejection process, and when the electric rod drives the pushing part to ascend to eject out the sealing ring, the rotation guiding part enables the pushing part to integrally rotate, the silica gel scraper is driven to be tightly attached to and scrape the inner wall of the lower mold, and residual rubber is scraped; the production cycle is shortened, and the production efficiency and the automation level are improved.

The invention relates to a method for preparing a carbon nanotube reinforced copper-silver-based electrical contact composite material based on a liquid phase atomization method, and belongs to the technical field of electrical contact preparation. The preparation method comprises the following steps: carrying out hot pressed sintering on mixed powder of reinforcement powder, copper powder and silver powder, solidifying the powder to form an Ag-coated CNTs / Cu-Ag composite material block, and then preparing the Ag-coated CNTs reinforced Cu-Ag-based electrical contact composite material through a process route of solid solution, extrusion and aging. The preparation method disclosed by the invention is simple to operate and stable in preparation process, and the mechanical and electrical properties of the prepared composite material can respectively reach 157HV and 103% IACS (International Annealed Copper Standard) and above; according to the method, ablation and damage of the surface of the electrical contact in the working process are relieved, the viscosity of a molten pool is increased, the contact resistance in the electrical contact process can be reduced, the current concentration phenomenon and the temperature rise effect at a contact point can be relieved, the mass loss of an electrical contact material is reduced, the maintenance cost is reduced, and the method has good application prospects in the field of electrical contact materials.

The invention discloses a carbon fiber composite material sound barrier forming device, and relates to the technical field of sound barrier forming, the carbon fiber composite material sound barrier forming device comprises a working bottom table and a first supporting column, the first supporting column is fixedly connected to the top surface of the working bottom table, an upper mold is installed on the lower surface of the top end of the first supporting column, a sound insulation barrier is arranged on the working bottom table, and an auxiliary assembly is arranged on the working bottom table; production and forming of the carbon fiber composite material sound barrier are divided into simultaneous operation of four stations with coherent processes, the four stations do not interfere with one another during operation, and the problems that in the traditional hot press forming process, equipment is in an idle state during cooling, demolding and other steps, four stations are adopted for simultaneous operation, and when one station is used for cooling and demolding, the equipment is not in an idle state are solved. Other stations can be used for machining, residue removal or release agent spraying, feeding and other operations, the equipment utilization rate is greatly improved, no obvious intermittency exists in the production process, and therefore more carbon fiber composite material sound barriers can be produced in unit time.

The invention discloses an epoxy resin-based NTC (Negative Temperature Coefficient) composite material containing ionic liquid and carbon black as well as a preparation method and application of the epoxy resin-based NTC composite material. The preparation method of the material comprises the following steps: mixing the ionic liquid and the epoxy curing agent, heating on a heating table, stirring and mixing at the same time, then adding the epoxy resin, the carbon black, the surfactant and the solvent, mechanically stirring and uniformly mixing, and heating in a vacuum oven to remove the solvent to obtain the material. And then carrying out hot pressing for a certain time through a press vulcanizer at a certain temperature to obtain the epoxy resin-based NTC composite material containing the ionic liquid and the carbon black. The epoxy resin-based NTC composite material containing the ionic liquid and the carbon black has the advantages of high B value, good mechanical strength, high heat conductivity coefficient, high crosslinking density and the like, and the preparation method is simple to operate, mild in reaction condition, low in raw material cost and suitable for large-scale industrial production and application.